Abrading-wheel.



J. H. REED.

ABRADING WHEEL.

APPLIOATION FILED AUG. 30, 1911.

1,056,058. Patented Mar. '18, 1913.

UNITED, sT- TEs PATENT umnme-wnnnnf Specification of Letters Patent.

Patented Mans, 1913.

Application filed August 30, 1911. Serial No. 646,775.

To all whom it may concern:

Be it known that 1, JAMES H. REED, a citizen of the United States, residing at Lynn, county of Essex, State of Massachu setts, have invented a certain new and useful Improvement in Abrading-Wheels, of which the following is a specification, reference being had therein to the accompanying drawings. 6 My invention has for'its object an improvement in abrading wheels, such for'example, as scouring wheels which are used in the smoothing of the surface of boot and shoe heels. rior to the blacking and final finishing o the same. Scourers for the above purpose as now commonly made, so far as known to me, have a certain maximum of speed at "which they can be driven and if driven beyond. this .maximum of speed they will burn the heel and destroy it, the effect 'of burning being to so impair the surface of the heel as to prevent its properly taking the subsequent blacking and finish. By the'employment of my invention the speed thereof maybe largely increased beyond that of the maximum of speed of scourers as now commonly constructed and the time of the scouring operation thereby greatly diminished, without burning'or impairing the heel, or interfering in any way-with the efficiency and thoroughness of the scouring operation.

. My invention will be readily understood from the following description taken in connection with the accompanying drawings and the novel features thereof are pointed out and clearly defined in the claims at the close of the'specification. f l I In the drawings, Figure 1 isan end view 40 of a scouring wheel embodying my invention, partly broken away for greater clearness. Fig. 2 ,is a side elevation thereof, also broken away to show the construction more .fully'.

Referring to .the drawings, A is a shaft upon which the wheel is mounted.

B is an annular-collar formed integral with the shaft, or rigidly secured thereto.

C and D are clamping face plates between 0 which. the scouring wheel proper E is clamped securely on the shaft'A, the said shaft A passing through said clamping plates C and D and the wheel E. The free end of the'shaft A is screw-threaded and is provided with a nut H, between which and the collar B, when the said not H is set up I dially within the by means of a firmly, the clamping plates C and D and scouring wheel E arerigidly secured, so as to turn with the shaft.

The scouring wheel proper, designated at as E, consists of a metallic hub portion 2, onto the periphery of which is molded and vulcanized an annular web 3, preferably of yielding material, such for example as rubber. This rubber portion 3 of the wheel as as also the'metallic portion 2 thereof, is. divided 'into segments by means of radial grooves 10 on both faces of the wheel and the outer ends of these grooves at the pev riphery of the wheel are connected by transverse notches or depressions 4 across the periphery. Each of the segments is therefore at the periphery of the wheel not only rounded or curved transversely as shown at 5, Fig. 2, but is also curved lengthwise of theperiphery, as shown at 6, Fig.

1. Thatis, while the central portion of the face of the segment may be flat lengthwise,

or substantially flat, it rounds off into the depressions at the side of the segment, that so is the whole wheel when viewed from the side .asshown Fig. 1 has somewhat the appearance of a rosette.

- -On each face of the metallic hub 2 of the wheel an annular groove 7 is formed to receive a wire 8 and pivoted on the wire 8 are a series of holders 9 which extend rarooves '10 and the outer ends of these hol ers are curved as indicated at 20 to fitthe curved transverse rea0 cesses 4.. The wire 8 is held within the re-- ccss 7 by means of retaining strips or plates 21 .set flush with the face of'the, hub 2 and projecting over the annular :recesses' These retaining screw 22. One of these retainers 21is shown Fig. 1. Preferably I employ two of them which are set on op- ]posite sides of the annular slot or recess 7.

. The holders 9 are in pairs, the members of a pair bein set onopposite sides ofqthe wheel and t e ends which project over the periphery of the wheel in the grooves t slightly overlap,'said' ends being beveled so that they will l Fig. 2. The object of these holders is to hold the abrasive covering of the wheel securely in place. They are pivoted as shownon the wire 8 in order to permit them to be swung back when it is necessary to renew 11s the abrasive'cover. When these holders are. in their-holding position, and the wheel is strips are secured in. place as 1e closely, together as shown ready for use they lie within the radial slots and are substantially flush with the face of the wheel. The notches 4 on the periphery of the wheel into which the curved ends of the holder project, as shown, are of sufficient depth toreceive the holders and the holders when in the notches are below the versely over the peripheral face of the wheel and inwardly on either side of said peripheral face so. that the edge 25 of the clamps O and D extend slightly overthe edge of the abrasive covering and so tend to hold the same securely in place.., This arrangement together with the holders which are preferably placed relatively near together form a very secure'holding means for the abrasive covering.

Underneath each of the pivoted holders 9 I preferably place a s iral spring 12, see Fig. 2, which is seate in a socket in the bottom Ofthe/radial groove 10 to prevent its becoming: displaced. This spring operates when the clamping plates C D are moved back to throw open the holders, that is swing them out and back from the periphery of the wheel, and thus leave the operator free to remove the worn out abrading covering and put on a new covering;

Ashereinab0ve. -statedonly the central portions of each segment at the per hery of the wheel make contact with the ork, and the depressions between the segments permit of the passage of air constantly across the face-of the work. By this means the surface .of the work is prevented from burning and the speed of the abrading wheel may be largely increased as compared with abrading wheels whichare not provided with. these depressions for access of air, and

thus-the operation of the wheel on a given piece of work-may be much more speedily performed.

"While I have'shown my invention'as embodied in a wheel especially adapted for scouring articles, such for example as boot and shoe heels, I do not desire. to limit my- 7 t l "for said holders tendin self'to any particular abrading operation since my invention may be advantageously used for a variety of abrading operations.

What I claim is; 1. An abrading wheel the periphery of which is divided into segments by transverse depressions between said segments and having pivoted holders for the abrading strip projecting into said transverse depressions.

' '2. An abrading wheel comprising a metallic hub portion, a portion of yielding material surrounding said hub portion divided 'into segments by depressions in the periphery, an abrading strip .on said periphery coverin said segments and following said depressions and holders projecting into said depressions to hold the abrading strip in place.

, e 3 An abrading wheel comprising a metallic hub portion, a portion of yielding material surrounding said hub portion divided into segments by depressions in the periphery, an abrading strip on said periphery coverln depressions, pivoted holders set radially of said wheel and projecting at their free ends into said depressions in the periphery and clamping plates on either face of said wheel to lock said holders securely in place.

4. An abrading wheel comprising a metallic hub portion, a portion of yielding material surrounding said hub portion divided into segments by depressions in the periphery, an abrading strip on said periphery covering said segments and followin said depressions, pivoted holders set radia ly of saiclwheel in grooves in the face thereof, said holders being in pairs, one pair for each of said depressions in the periphery, the ends of said holders overlying said abrading strip in said depressions, springs to move them outwardly from the face 0 the said wheel, and clamping'face plates on either side of said wheel, the edges of which overlap the edges of the abrading strip and which look the said holders place, and means for securing said clamping plates in firm contact with the face of the wheel.

said segments and following said In testimony whereof I aliix my signature,

ALICE H. Monmson. 

